Method of controlling mites using chloromethanesulfonamide

ABSTRACT

A METHOD FOR CONTROLLING MITES BY APPLYING A MITICIDALLY EFFECTIVE AMOUNT OF CHLOROMETHANESULFONAMIDE TO AN AREA TO BE PROTECTIVE FROM MITES.

United States Patent O Int. Cl. A0111 9/16 US. Cl. 424-321 1 Claim ABSTRACT OF THE DISCLOSURE method for controlling mites by applying a miticidally effective amount of chloromethanesulfonamide to an area to be protected from mites.

This is a continuation of application Ser. No. 13,204 filed Feb. 20, 1970, now abandoned.

The" present invention relates to "a systemic miticide containing chloromethanesulfonamide as an active ingredient and a method for controlling mites very effectively, without causing phytotoxicity and saving labor by spreading chloromethanesulfonamide on plants such as vegetables, fruit tree and the like or soil surface or mixing the miticide with soil or spraying a solution dissolved in an appropriate amount of water. 7

Most commercially available miticides kill mites contactly after spreading them but for this purpose they must be spread throughout the area Where mites exist and such a means is very laborious.

' The-present.inventrs have found that although the compound to be used in the present invention is low in the contact miticidal activity,'it shows a highsystemic miticidal activity by applying it on leaves or roots. Namely, the compound to be used in the present invention penetrates and transfers into plant system and consequently mites existing on an area not directly spread can be killed and even if there are some areas where the miticide is incompletely sprayed, the miticidal activity can be satisfactorily attained.

The inventors have paid attention to the very high water solubility of the compound and made various investigations resulting in the discovery that mites can be very effectively killed by applying the compound directly on soil surface, mixing the compound with soil or spraying a solution of the compound in an appropriate amount of water on soil surface.

Most of the conventional miticideslmust be applied directly on'the area where mites exist and therefore it is very laborious to spray the miticides evenlyv and throughout such an area.

However, according to the method, for applying the systemic miticide of this invention, it is possible to apply the miticide conveniently and further since the compound is water soluble, the miticide can be easily absorbed from plants and roots and transfers throughout the plant to develop the miticidal activity, so that there is no fear of unevenness as in a spreading agent. Accordingly, the labor and time can be saved and the use of this compound is very advantageous.

In order that chloromethanesulfonamide is used as a systemic miticide, the acid amide is mixed with an inert carrier (diluent), if necessary, an adjuvant to form into ice be planted prior to planting or a binding treatment, plant stem coating or plant stem injecting treatment and the like can be made.

The term Fcarrier used herein means vehicles'to be used for carrying the active ingredient to a desired area, which may be both solid and liquid.

As the solid carrier, for example, use may be made of various clays, pyrophillite, talc, bentonite, white carbon, kaolin, diatomaceous earth, silica and vermiculite. 1

As the liquid carrier, for example, use may be made of water, alcohol, acetone, cyclohexanone, fatty acid and fatty acid ester.

' As the adjuvant, use may be made of.conventional surfactants, such as spreading agent, emulsifier, sticker and wetting agent, to be used for formulating pesticides, for example, polyoxyethylene alkylaryl ether, polyvinyl alcohol, polyoxyethylenesorbitan, monooleate, alkyldi methylbenzylammonium chloride, alkylbenzenesulfonate, ligninsulfonate, sulfuric acid ester of a higher alcohol and the like.

In general, pesticides must be formed into a formulation suitable for spreading by adding a carrier, such as solid carrier or liquid carrier, but since the compound of the present invention is easily soluble in water, consequently this compound may be spread directly in an aqueous solution. The compound of this invention is hardly decomposed by ultraviolet ray, and therefore even if the compound is spread on the soil surface, the compound is stable. The compound is prepared from chloromethanesulfonyl chloride and ammonia, and is a white or pale yellow prism crystal having a melting point of 7073 C. and is soluble in water or water-soluble solvents, such as alcohol and the like.

When the compound of this invention is used together with ammonium chloride, which is byproduced in the preparation of the compound without separation, the miticidal activity is further improved.

In vaddition to the byproduced ammonium chloride, the miticidal activity can also be improved by using together with fertilizers, for example, nitrogen fertilizers, such as, urea, ammonium sulfate, ammonium nitrate; calcium superphosphate, potassium phosphate, potassium chloride, potassium nitrate and the like or the composite fertilizers thereof.

The mixture ratio of this compound to the fertilizer, when both activities of fertilizer and miticide are aimed at, is, forexample, urea of 5 to 30 kg. and'chloromethanesulfonamide of 0.5 to 8 kg. per 10 ares and when only miticidal activity is aimed at, is urea of 0.5 to 3 kg. and 0.5 to 8 kg. of chloromethanesulfonamide per 10 ares.

The merits attained by mixing with the fertilizer in this manner are as follows:

(1) Whenever such a mixture is applied to cultivating field or forest as an initial or supplemental manure, mites can be combatted. Furthermore, for only the purpose of prevention of mites, such a purpose can be accomplished by decreasing the amount of fertilizer. Accordingly, the heretofore complicated and diliicult technique and labor for the prevention can be considerably omitted. (2) The handling in the application is simple and safe, that is, it is merely necessary to effect cultivation or soil covering after applied the mixture over the whole surface of the field to be treated and in some case, the efiect can be developed fully even if the soil covering or cultivation is not carried out.

(3) Since the use of water is not required, the mixture is convenient for upland or forest in highland, inclined field or hill where the use of water is inconvenient.

i (4) When the mixture is applied in soil, it absorbs graduallywaterthereinand the granules-are collapse and theree fore the mixture is absorbed: favorably from roots and to obtain an emulsifiable concentrate, which was diluted with water and then sprayed.

the activityappears rapidly and the eifect enhances. The EXAMPLE 4 collapse needs: a long time and consequently theactivity 5 Dust continues for a long Period f 3% of chloromethanesulfonamide, 20% of talc and (5) chlommethanesulfonemlde P1'e"ents mtrlficaqon 67% of kaolin were mixed and milled to form a dust, and the-efiiect of nitrogen continues for a long period which was spreai of'time and further the miticidal activity can be increased; EXAMPLE 5 (6) No phytotoxicity appears against various useful 19 'plantsfps Granule (7) Chloromethanesulfonamide permeates and trans- Into a granulator were charged 90% of powdery urea; fefs in Plant and reeehes every P of the P1311t and and then 10% of melted chloromethanesulfonamide were accordingly any natural enemy is not damaged. added to the powdery urea dropwise, while rotatingthe Ammonium chloride V-P in the P P granulator, to prepare a granular formulation. tion of chloromethanesulionamide is not necessary to be EXAMPLE 6 I separated, so that the use of chloromethanesulfonamide 1 is economic. v Granule "'(9)*Particularly, chlorometha'nesulfonamide is easily edm e. .hassassin.shamans.mm: and further e Strength e Qbtamed gralnule IS 5 small granules. At the end of the granulating step, the (10) chloimpethanfasulfqnannde a low toxmty resulting small granules were covered with 10% of (ii further It apphededlrecfly i SO11 copseqilenfly atomaceous earth to prepare a granular formulation. the compound can be used safely without pubhc nuisance.

The oral poison LD of the compound of this inven- ,7 AM 7 tion against male rats is about 400 mg./-kg., and the com- Granule pound is safe to human body. Furthermore, the cornpound has no phytotoxicity In a rotary mixer, a mixture of 4.5% of chlorometh- The obj-set of this invention can be attained by using anesulfonarmde, 0.1% of polyoxyethylene laurate, 0.1% 50-500 g./l0 ares 'when the miticide is directly spread of Polyethylene glycel and 01% e e was spreyed on plants, or by using 500 kg /10 ares when t on 90.7% of ammonlum' sulfate while stlrrmg the mixer, miticide is used for treating soil and the resultmg mlxture was mixed homogeneously and The following examples are given in illustration of this formee mto small grenules- The small granules were invention, but the compounding ratio of the efiective ingreered wlth of diatomaceous earth Prepare a gran dient and the additives can be varied in a broad range. In mar formulatlon' the examples, means percent by weight. EXAMPLE 8 EXAMPLE 1 Granule 20% of chloromethanesulfonamide, 10% of urea, 10%

Granule v 40 of white carbon (colloidal silica), 15% of bentonite, 2%

20% of chloromethanesulfonamide, 1% of sodium of SOdium. lignipsulfonate and talc were mixed dodecylbenzenesulfonate and 79% of a mixture of acidic The resultmg mlxmre kneaded with a small amount of bentom'te and diatomaceous earth were mixed and milled. i granulated and dned to prepare a granular The resulting mixture was kneaded with a suitable amount 45 latlon of'water, granulated by means of an extrusion granulator EXAMPLE 9 and dried to prepare a granular formulation, which was Aqueous solution Spread "A mixture of 30% of chloromethanesulfonamide and EXAMPLE 2 10% of ureawas dissolved into 60% of water to prepare an aqueous solution. Wettable Powder The miticidal activity of the compound according to 50% of chloromethanesulfonamide, 2% of sodium the present invention will be explained with the following dodecylsulfate, 2% of polyvinyl alcohol and 46% of experimental examples.

a mixture of white carbon and diatomaceous earth were mixed and milled to prepare a wettable powder, which EXPERIMENTAL EXAMPLE 1 was Suspended in water and th d, Test for miticidal activity on citrus red mite when soil is treated with the compound of this invention.

EXAMPLE 3 Citrus red mites were put on a young summer orange Emulsifiable concentrate plant planted in a pot having a diameter of 12 cm. in

0 a greenhouse.

20% of chloromethanesulfonamide, of xylene and The Soil in the P was treated with the granular formu- 1s% of an emulsifier sold by Toho Chemical Industry lation p p i Example i which sof e Co. Ltd. under the trademark Sorpol (a mixture of polycompound according to {his invention P 1 P were oxyethylene alkylaryl ether, polyoxyethylene fatty acid used. The number of living mites were determined 1: ester and alkylaryl sulfonate) were mixed and dissolved 65 obtain a result as shown in the following Table 1.

TABLE 1 Amoglgg Numb r Number 01 livnhgftrgies after spreading ingredient of mites used before 3 6 10 14 17 Active ingredient (kg-I10 a) spreading days days days days days Chloromethanesulfonamide (present invention) 2 181 208 7 1 1 10 Dimethoate 1 2 169 66 3 10 18 21 Non-treatment 162 229 182 102 35 79 Trade of dimethyl-S-(Nmethylcarbamoylmethyl) dithiophosphate sold by American Cyanamide C0.

EXPERIMENTAL EXAMPLE 2 1) Active ingredient of chloromethanesulfonamide is dissolved in 50 ml. of water and the solution is sprayed on the soil in the pot.

(2) The active ingredient is directly spread on the soil Test for miticidal activity on citrus red mite. 7 Citrus red mites were put on a'young summer orange plant planted in a pot having a diameter of 12 cm. in a surface. greenhouse. p

The wettable Powder Prepared in Example 2 Was diluted S-3 n t mgredlent mlxed mm the 5011 with water to prepare a suspension containing the compound of this invention in a concentration of SOD ppm. gi g figg zg gf g i gni i gtg i ig fii The suspension was sprayed on the summer Orange plant Tau 4 a w m 6 mg in an amount of 30 ml. per 1 pct by means of a spray e TABLE 4 Amount of active Number Number of living mites after treatment afteringredient of mites used (kg./ before 3 5 9 13 19 Activeingredient 10 a) treatment days days days days days days Chloromethane sulionamide' (1) Spraying to soil- 1 32 1O 5 2 1 0 ..0

(2; Soil surface treatm 1 52 14 2 1 0 0 0 (3 Mixing with soil... 1 48 12 4 3 0 0 0 Temik l granule (10%70011171'01) 1 58 21 0 0 0 0 0 N oil- 68 83 61 37 40 93 i Trademark of 2-methyl-2-(methylthio) propionaldehyde, o-(methylcarbamoyl) oxime sold by Union Carbide Corp. gun. The number of living mites after the spraying of i the suspension was determined to obtain a result as shown 5 As seen from the above Table 4, the above three treatin the following Table 2. ing methods show a high activity which is not inferior TABLE 2 Number Number of living mites after spraying after- Coneenof mites tration before 2 4 9 13 17 19 Active ingredient (p.p.m.) spraying days days days days days days chloromethanesulfonamide (present invention) 500 114 0 0 1 0 4 29 Galecron 1 (control) 500 108 0 0 0 0 15 60 Non-treatment 159 219 222 129 96. 252 291 1 Trademark of N-(2-methyl-4-chlorophenyl)-N,N-dimethyliormamldine sold by Ciba Ltd.

EXPERIMENTAL EXAMPLE 3 to that of the control miticide, and do not show any Field test for miticidal activity on citrus red mite, 9. i f:,

Citrus red mites were put on a two year old young I I summer orange plant.

The wettable powder prepared in Example 2 was diluted Test for mitlcidal activity of chloromethanesulfonamide with water to prepare a suspension having a predetermined 0 Carmine mite. concentration of the active ingredient, and the suspension Carm ne mite adults were put on a young egg-plant was sprayed in an amount of 100 l, per 1 plant, The planted m a pot having a diameter of 12 cm. m a greennumber of living mites per 50 leaves of 1 plant after house. The soil in-the pot was treated in the following the spraying was determined to obtain a result as shown 9 in the f llo in Table 3, (1) Active ingredient of chloromethanesulfonamide is TABLE 3 Number Number of living mites after spraying after- Concenof mites tration before 2 7 13 20 27 35 Active ingredient (p.p.m.) spraying days days ay days ays days chloromethanesulfonamide (present invention) 250 368 36 0 0 0 0 0 Morestan (control)- 250 245 4 1 0 0 0 0 Non-treatment 386 411 302 89 61 28 22 1 Trademark of 6-methyl quinoxaline 2,3-ditbiocarbonete sold by Bayer A I dissolved in ml. of water and the solution is sprayed EXPERIMENTAL EXAMPLE 4 on the soil in the pot.

(2) The active ingredient is directly spread on the soil Test for miticidal activity of chloromethanesulfonamide u f on citrus red mite. (3) The active ingredient is mixed with the soil thor- Citrus red mite aduts were put on a young summer oughly, Orange Plant Planted in a PQ' Paving a diameter of The number of living mites after this treatment was 111 a gl'eeflhouse- The $011 1!! the P as treated 1n determined to obtain a result as shown in the following the following three methods. Table 5.

TABLE 5 Amount of active Number Number of living mites after treatment afteringredient of mites used (kg./ before 3 5 9 12 15 18 Active ingredient 10 a) treatment days days days days days days chloromethanesulfonamide:

Spra ng to soil 2 89 37 0 0 0 0 1 2) Soilsuriace treatment. 2 26 5 1 0 0 0 0 3) Mixing with so 2 42 17 1 0 0 0 0 Temik granule (10%, control) 2 34 1 0 0 0 0 0 Non-treatment 53 87 71 79 67 107 Test for miticidal activity of chloromethane-sulfonamide mixed with fertilizer on carmine mite.

Carmine mite adults were put on a young egg-plant planted in a pot having a diameter of 12 cm. in a greenhouse. The soil in the pot was treated with chloromethanesulfonamide mixed with fertilizers.

' The number of living mites after this treatment was""" determined to obtain a result as shown in the following Table 6.

TABLE 6 I As seen from the Table- 6,: the miticidal activity of chlorornethanesulfonarnide used with fertilizers is superior to that of chloromethanesulfonamide not combined with fertilizers.

What is claimed is:

A" method for controlling mites, which comprises applying a miticidally effective amount of chloromethanesulf onamide directly to mitesv Amount Number Number of living mites after of active of mites treatment after ingredient before use treat- 4 6 15 7 Chemical (kgJlO a) ment days days days! days 1 Chloromethauesulfonemide 1 32 18 6 0 0 Chloromethauesulfonamide. 1

plus 90 10 2 0 0 Ammonium chloride 1 Ohloromethanesulfouomide 1 plus 65 12 1 0 1 Urea 1 Chloromethenesulionamide 1 plus 52' 9 '2 1 0 Ammonium sulfate 1 Chloromethanesulfonarnid 1 plus 46 5 -1 2 0 Ammonium chloride 0. 3 Chloromethanesulionamide 1 plus 8 3 5 0 Urea 15 Chloromethenesulfonamide 1 plus 69 11 1 4 1 Ammonium sulfate.-...-.- 30 Ammonium chloride 0.3 49 60 71 81 68 Non-treatment 76 92 88 97 References Cited El-Hewehi et al., J. Prakt. Chem. 16 No. 5-6, 297- 424-Dig. 8

US. Cl. X.R. 

